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${{\mathit \Xi}_{{c}}^{+}}$ MEAN LIFE

INSPIRE   PDGID:

S045T

VALUE ($ 10^{-15} $ s) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 453 \pm5}$ OUR AVERAGE $454$ $\pm5$ $\pm2$ 56k 1 AAIJ 2019 AG LHCB ${{\mathit \Xi}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ $503$ $\pm47$ $\pm18$ 250 MAHMOOD 2002 CLE2 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}{{\mathit \Upsilon}{(4S)}}$ $439$ $\pm22$ $\pm9$ 532 LINK 2001 D FOCS ${{\mathit \gamma}}$ nucleus, ${{\overline{\mathit E}}}_{\gamma }$ $\approx{}$ 180 GeV $340$ ${}^{+70}_{-50}$ $\pm20$ 56 FRABETTI 1998 E687 ${{\mathit \gamma}}{}^{}\mathrm {Be}$, ${{\overline{\mathit E}}}_{\gamma }$= $220$ GeV $400$ ${}^{+180}_{-120}$ $\pm100$ 102 COTEUS 1987 SPEC ${{\mathit n}}{}^{}\mathrm {A}$ $\simeq{}$ 600 GeV $480$ ${}^{+210}_{-150}$ ${}^{+200}_{-100}$ 53 BIAGI 1985 C SPEC ${{\mathit \Sigma}^{-}}{}^{}\mathrm {Be}$ 135 GeV • • We do not use the following data for averages, fits, limits, etc. • • $410$ ${}^{+110}_{-80}$ $\pm20$ 30 FRABETTI 1993 B E687 See FRABETTI 1998 $200$ ${}^{+110}_{-60}$ 6 BARLAG 1989 C ACCM ${{\mathit \pi}^{-}}$ (${{\mathit K}^{-}}$) ${}^{}\mathrm {Cu}$ 230 GeV 1  AAIJ 2019AG reports [${{\mathit \Xi}_{{c}}^{+}}$ MEAN LIFE] $/$ [${{\mathit D}^{\pm}}$ MEAN LIFE] = $0.4392$ $\pm0.0034$ $\pm0.0028$ which we multiply by our best value ${{\mathit D}^{\pm}}$ MEAN LIFE = ($1.033$ $\pm0.005$) $ \times 10^{-12}$ s. Our first error is their experiment's error and our second error is the systematic error from using our best value.

References:

AAIJ 2019AG PR D100 032001 Precision measurement of the $\Lambda_c^+$, $\Xi_c^+$ and $\Xi_c^0$ baryon lifetimes MAHMOOD 2002 PR D65 031102 Measurement of the ${{\mathit \Xi}_{{c}}^{+}}$ Lifetime LINK 2001D PL B523 53 A New Measurement of the ${{\mathit \Xi}_{{c}}^{+}}$ Lifetime FRABETTI 1998 PL B427 211 A New Measurement of the Lifetime of the ${{\mathit \Xi}_{{c}}^{+}}$ FRABETTI 1993B PRL 70 1381 Measurement of the Mass and Lifetime of the ${{\mathit \Xi}_{{c}}^{+}}$ BARLAG 1989C PL B233 522 Measurement of the Mass and Lifetime of the Charmed Strange Baryon ${{\mathit \Xi}_{{c}}^{+}}$ COTEUS 1987 PRL 59 1530 Production of the Charmed Strange Baryon ${{\mathit \Xi}_{{c}}^{+}}$ by Neutrons BIAGI 1985C PL 150B 230 Measurements of the Lifetime of the Charmed Strange Baryon ${{\mathit A}^{+}}$